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Robert Silver
 USA
Hi Speed Rail System Printer Friendly Version
The U.S. presently has thousands of miles of Interstate Highway right-of-ways. Why not build a hi-speed elevated rail system that crosses the U.S. There is usually plenty of room in the medians. If the system is elevated there would be no need for crossing etc. The system could be built with ready-made concrete and steel components that would be easy to construct. These trains could have speeds in excess of 120 MPH. It could also have cars that would transport the family auto. In addition, it could be a public works project that would employ thousands of people similiar to the TVA and the building of the Hoover Dam.
Reward: I would like to travel across the country on such a train. 

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El Malki Boubker
 Canada
No More Dead Angles in Your Car Printer Friendly Version
Maybe it's time to replace our old fashioned rear-view and outside car mirrors with something new. What about those miniature cameras and an LCD placed in the dashboard. You can even try it yourself. No more dead angles.
Reward: Credit and maybe a car. 

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hbbatista
 Brazil
Turbocharged alternator Printer Friendly Version
Since a high performance turbocharger reduces engine lifetime, I had this idea.
The turbocharger turbine would be connected to a reductor instead of an air pump and then it would push an alternator. So, all parts that are normally connected directly to the engine, like oil pump, water pump, air conditioner compressor, power steering pump, would be pushed by electrical motors. The engine would get free from all that stuff without being damaged, and all the energy wasted in exhaust flow would be recycled by the turbo. Even the waste gate would not be necessary.
Reward: I would like to know that it works. 

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